1. 1st divide to half take the heavier out + N3 P# E" u/ }5 @公仔箱論壇2. 2nd take 4 balls out of 5 divide 2 groups to get the heavier out. (if is equal thn the remain is the one u looking for)公仔箱論壇* \" w: u& u" ^" h9 G0 T( P `
3. Same method if is not equal on 2nd try.